230999domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmaller of twin primes whose middle term is a multiple of A002110(5)=2310.at n=17A060231Lesser of twin primes (p,q=p+2) such that p*q-p-q and p*q+p+q are primes.at n=20A126334The lesser of twin prime pairs with each prime in a different millennia.at n=5A158861Prime numbersat n=20521